Images of what appears to be HTC's new line-up of smartphones have been leaked and have everyone buzzing about what these models could be.

Published first by PocketNow, we should be seeing more of these handhelds at Mobile World Congress in Barcelona next month. But until then, let's go over what we have here.

First, the smartphone to the left in the image above has most tech followers speculating that this is an evolution of the Desire HD, except now with a front-facing camera and touch-sensitive buttons. To the right, we have a smaller handheld that looks like a spitting image of the Nexus One with that center trackball - except the entire design is far sleeker.

Not pictured here are a pair of buttonless smartphones (which you can check out here). These ones are mysterious because the mock-ups honestly don't look real, even with HTC and Verizon logos emblazoned at the top. There's also a potential Aria 2 (also identified as the A3380, which is already selling in Asia). Obvious specs here are a front-facing camera, touch-sensitive menu buttons, an optical D-Pad in the bottom center flanked by call start and end buttons.

Rachel King is a staff writer for CBS Interactive based in San Francisco, covering business and enterprise technology for ZDNet, CNET and SmartPlanet.
She has previously worked for The Business Insider, FastCompany.com, CNN's San Francisco bureau and the U.S. Department of State. Rachel has also written for MainStreet.com, Irish Americ...
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